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System and method for accurately weighing and characterizing moving vehicles

  • US 5,959,259 A
  • Filed: 03/11/1997
  • Issued: 09/28/1999
  • Est. Priority Date: 03/11/1997
  • Status: Expired due to Term
First Claim
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1. A system for weighing moving vehicles comprising:

  • a) a weight transducer extending in the direction of vehicle travel and positioned in the path of a moving vehicle;

    the transducer providing first output signals indicative of the vehicle loading in the direction of vehicle travel as the vehicle travels across the transducer;

    b) a vehicle speed sensor providing second output signals indicative of the vehicle speed as the vehicle travels across the transducer;

    c) a processor for receiving the first and second output signals; and

    d) programmable instructions stored in the processor for controlling the processor to calculate the weight of the moving vehicle by integrating substantially all of the first output signal over time as the vehicle travels over the transducer and multiplying the integration result by the vehicle speed and a calibration constant that is substantially invariant for differing types of vehicle tire footprints, weights, and speeds.

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